Command (m for help): p

Disk /dev/hdb: 122.9 GB, 122942324736 bytes
255 heads, 63 sectors/track, 14946 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1               1       14946   120053713+  83  Linux

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
localhost mnt # ls -l /mnt
total 24
drwxr-xr-x 2 root root 4096 Jul  7 17:06 cdr
drwx------ 2 root root 4096 Feb 13 19:03 cdrom
drwxr-xr-x 2 root root 4096 Jul  7 17:06 dvd
drwxr-xr-x 2 root root 4096 Jul  7 17:06 dvdr
drwxr-xr-x 2 root root 4096 Jul 17 18:48 extra
drwx------ 2 root root 4096 Feb 13 19:03 floppy
localhost mnt # mount /dev/hdb1 /mnt/extra
mount: /dev/hdb1 already mounted or /mnt/extra busy
localhost mnt # mount -t ext3 /dev/hdb1 /mnt/extra
mount: /dev/hdb1 already mounted or /mnt/extra busy
localhost mnt # cat /etc/mtab
/dev/hda3 / ext3 rw,noatime 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
udev /dev tmpfs rw,nosuid 0 0
devpts /dev/pts devpts rw 0 0
none /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
shm /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
usbfs /proc/bus/usb usbfs rw,devmode=0664,devgid=85 0 0